The average penis length is between five and seven inches long when erect, though obviously many men will end up outside these parameters (which is perfectly fine - after all, it's what you do with it that counts, haha!).

I've always heard that the average size is between 5 and 6 but this will all depend on what survey you read into, also many people lie about these things so you can't really be certain. Also about your post, it take a lot more to being a porn star than just having a big member.